Re: Enabling ipmi [was: CVS commit: src/sys/arch]

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

On Fri, Aug 22, 2008 at 12:49:17PM +1000, Simon Burge wrote:
> Manuel Bouyer wrote:
> 
> > 
> > Module Name:        src
> > Committed By:       bouyer
> > Date:               Thu Aug 21 18:06:18 UTC 2008
> > 
> > Modified Files:
> > 
> >     src/sys/arch/amd64/conf: GENERIC XEN3_DOM0
> >     src/sys/arch/i386/conf: GENERIC XEN2_DOM0
> > 
> > Log Message:
> > 
> > Enable ipmi(4) by default in GENERIC and related kernels.
> 
> Vaguely related to enabling this by default, on one SuperMicro machine
> here ipmi(4) seems to take an eternity to attach (maybe 10 or 15 seconds).
> There's 23 sensors attached to that ipmi(4) - I suspect it's busy doing
> some sort of sample thing but I've not taken the time to figure out
> exactly what it is doing...

Yes, I've seen this too. I think it's communications with the BMC
which isn't so fast, and the driver has a lot of queries to do
when attaching (especially getting strings) It's not sampling the
sensor values at this time; this happens later, from a kernel thread.

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--